MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/01/00 through 01/31/00
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 351 815 1,166
Davis 564 14 578
Irvine 587 0 587
Los Angeles 570 888 1,458
Riverside 218 183 401
San Diego 98 582 680
San Francisco 503 0 503
Santa Barbara 218 485 703
Santa Cruz 220 384 604
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 46 153 199
Other-Network UC n/a 758 758
_______ ______ _____
3,375 4,262 7,637
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 94 599 4,557
2-4 a.m. 52 215 2,038
4-6 a.m. 37 129 1,119
6-8 a.m. 122 435 10,386
8-10 a.m. 676 2,240 22,856
10-12 a.m. 1,377 5,271 51,949
12-2 p.m. 1,406 5,821 57,177
2-4 p.m. 1,697 7,080 69,933
4-6 p.m. 1,045 4,499 48,455
6-8 p.m. 489 2,251 30,511
8-10 p.m. 378 1,673 18,980
10-12 p.m. 264 1,234 13,303
__________ __________ __________ _________________
Total: 7,637 31,447 331,264
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,386 2,753 4,139
Davis 2,192 40 2,232
Irvine 2,566 0 2,566
Los Angeles 2,404 4,272 6,676
Riverside 986 727 1,713
San Diego 310 2,101 2,411
San Francisco 1,812 0 1,812
Santa Barbara 1,028 2,002 3,030
Santa Cruz 1,090 1,762 2,852
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 49 869 918
Other-Network UC n/a 3,098 3,098
_______ ______ _____
13,823 17,624 31,447
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 14,057 38,998 53,055
Davis 18,340 592 18,932
Irvine 24,011 0 24,011
Los Angeles 31,210 42,747 73,957
Riverside 9,651 8,714 18,365
San Diego 1,741 20,214 21,955
San Francisco 20,872 0 20,872
Santa Barbara 11,884 23,732 35,616
Santa Cruz 10,490 14,635 25,125
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 241 6,982 7,223
Other-Network UC n/a 32,153 32,153
_______ ______ _____
142,497 188,767 331,264
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 4.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:51
Average session length (minutes:seconds) 15:17
Longest session recorded (minutes:seconds) 633:21
Average number of searches completed per session 4.1
Retrievals per search - median 10.0
Retrievals per search - average 846.0
Retrievals per search - standard deviation 7741.7
Percent of searches completed with 0 results 22.1%
Percent of searches entered that are long 2.9%
Percent of long searches completed
(includes partial results) 62.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 28,187 28.6%
DISPLAY (excluding automatic displays) 42,244 42.9%
BROWSE 119 0.1%
SELECT 55 0.1%
HELP 1,347 1.4%
EXPLAIN 1,451 1.5%
SET/RESET 2,282 2.3%
SHOW 449 0.5%
ADD ON (AND, OR, AND NOT) 3,236 3.3%
LOGON or LOGOFF 11,112 11.3%
COMMENT 1 0.0%
SAVE 4,813 4.9%
USE 26 0.0%
OTHER 3,285 3.3%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 12,998 41.1% 2,485 19.1% 15 62.9 177.2
TITLE WORD 3,226 10.2% 946 29.3% 8 169.5 2453.5
EXACT TITLE 454 1.4% 186 41.0% 1 31.3 190.9
JOURNAL 729 2.3% 193 26.5% 626 3005.8 13937.5
EXACT JOURNAL 458 1.4% 131 28.6% 530 1519.5 2457.7
SUBJECT 2,750 8.7% 1,419 51.6% 457 5581.5 17532.1
EXACT SUBJECT 134 0.4% 67 50.0% 209 3363.6 8144.3
KEYWORD 7,840 24.8% 1,151 14.7% 53 2108.0 13580.5
FORM/PUB TYPE 249 0.8% 46 18.5% 56 963.0 5011.0
DATE 1,778 5.6% 298 16.8% 6 255.4 3574.3
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 17 0.1% 7 41.2% 12 118.7 325.9
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 71 0.2% 6 8.5% 100 896.7 3186.8
ISSN 3 0.0% 1 33.3% 253 253.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 9 0.0% 9 100% 0 0.0 0.0
PERIODICAL 635 2.0% 128 20.2% 4 233.2 1920.3
EXACT PE 78 0.2% 12 15.4% 3 24.4 149.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 187 0.6% 58 31.0% 57 1463.9 7451.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 3,617 13.0% 822 22.7% 7 269.3 3442.0
Single 24,216 87.0% 5,466 22.6% 33 1297.3 9744.1
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
SUBJECT 115 96.6% 46 40.0% 2 5.9 11.4
EXACT SUBJECT 4 3.4% 2 50.0% 2 1.5 0.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 91.8%
LONG 1.0%
TAGS 0.1%
FIELDS 1.0%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. NS command - no next screen 32.3%
2. First word of command is invalid 29.6%
3. FIND command with invalid index name 8.1%
4. PS command - no previous screen 5.3%
5. DISPLAY command contains invalid word 4.8%
6. Valid command at an inappropriate time 2.7%
7. Search term missing from search command 2.2%
8. Command contains escape or arrow key 1.4%
9. Add-on search, no index name after verb 1.4%
10. NS of SHOW/EXP command-no next screen 1.3%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 23.8%
2. GUIDE 17.9%
3. FIND (PSY DB) 8.4%
4. COMMANDS (ABI/PSY DBS) 6.5%
5. Unrecognized term 4.6%
6. INDEXES (PSY DB) 4.5%
7. ADDON SEARCH 3.8%
8. MAIL 2.7%
9. DISPLAY (INS/PSY DBS) 2.6%
10. SEARCH (PSY DB) 1.8%
11. All others 23.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.9%
2. First word of command is invalid 14.0%
3. DISPLAY command-first of >1 screen 7.8%
4. FIND command with invalid index name 7.2%
5. DISPLAY command - middle of >1 screen 6.1%
6. FIND command with zero results 5.6%
7. FIND command retrieves >1 book 5.4%
8. DISPLAY command-complete in one screen 4.5%
9. NS command - no next screen 2.8%
10. DISPLAY command - last of >1 screen 2.8%
11. All others 22.9%
Ten most frequent SHOW requests:
1. HISTORY 44.3%
2. SEARCH 25.6%
3. PSYCINFO NEWS 7.8%
4. MAIL STATUS 6.5%
5. MAIL SETTINGS 3.4%
6. SETTINGS (INS/PSY DBS) 2.8%
7. GLOSSARY 1.8%
8. SYSTEM NEWS 1.6%
9. PUBLICATION TYPES (PSY DB) 0.5%
10. LOCATION 0.3%
11. All others 5.4%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)